3138939 has 8 divisors (see below), whose sum is σ = 4650320. Its totient is φ = 2092608.

The previous prime is 3138929. The next prime is 3138943. The reversal of 3138939 is 9398313.

It is not a de Polignac number, because 3138939 - 2¹² = 3134843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3138929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58102 + ... + 58155.

It is an arithmetic number, because the mean of its divisors is an integer number (581290).

Almost surely, 2^3138939 is an apocalyptic number.

3138939 is a deficient number, since it is larger than the sum of its proper divisors (1511381).

3138939 is a wasteful number, since it uses less digits than its factorization.

3138939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116266 (or 116260 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 3138939 is about 1771.7051109031. The cubic root of 3138939 is about 146.4179398870.

The spelling of 3138939 in words is "three million, one hundred thirty-eight thousand, nine hundred thirty-nine".